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Cheap flights from Ontario to Missouri from C$ 216

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Missouri departing on 30/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Multiple Airlines Logo
1:35 p.m. - 10:02 a.m.YYZ-STL
21h 27m1 stop
Multiple Airlines Logo
10:57 a.m. - 2:05 p.m.STL-YYZ
26h 08m1 stop
C$ 366Multiple Airlines
Find Deal
Sat, 18 Oct - Thu, 23 Oct
Multiple Airlines Logo
9:45 a.m. - 1:57 p.m.YYZ-STL
29h 12m1 stop
Multiple Airlines Logo
6:22 p.m. - 2:40 p.m.STL-YYZ
43h 18m2 stops
C$ 395Multiple Airlines
Find Deal
Thu, 30 Oct - Thu, 6 Nov
American Airlines Logo
10:57 a.m. - 11:05 p.m.YYZ-MCI
13h 08m1 stop
American Airlines Logo
5:53 a.m. - 4:35 p.m.MCI-YYZ
9h 42m1 stop
C$ 477American Airlines
Find Deal
Wed, 5 Nov - Mon, 10 Nov
American Airlines Logo
3:52 p.m. - 11:56 p.m.YUL-STL
9h 04m1 stop
American Airlines Logo
7:58 p.m. - 3:11 p.m.STL-YUL
18h 13m1 stop
C$ 499American Airlines
Find Deal
Thu, 6 Nov - Sat, 8 Nov
Air Canada Logo
2:15 p.m. - 3:18 p.m.YYZ-STL
2h 03mdirect
Air Canada Logo
4:05 p.m. - 7:06 p.m.STL-YYZ
2h 01mdirect
C$ 527Air Canada
Find Deal
Sat, 25 Oct - Sun, 2 Nov
Air Canada Logo
2:15 p.m. - 3:18 p.m.YYZ-STL
2h 03mdirect
Air Canada Logo
4:05 p.m. - 7:00 p.m.STL-YYZ
1h 55mdirect
C$ 552Air Canada
Find Deal
Wed, 15 Oct - Wed, 22 Oct
United Airlines Logo
7:30 a.m. - 2:27 p.m.YYZ-STL
7h 57m2 stops
United Airlines Logo
5:28 p.m. - 11:58 p.m.STL-YYZ
5h 30m1 stop
C$ 587United Airlines
Find Deal
Sat, 25 Oct - Sat, 25 Oct
United Airlines Logo
6:00 a.m. - 3:46 p.m.YUL-STL
10h 46m1 stop
United Airlines Logo
6:43 p.m. - 12:46 p.m.STL-YUL
17h 03m2 stops
C$ 619United Airlines
Find Deal
Thu, 6 Nov - Sat, 8 Nov
WestJet Logo
6:45 a.m. - 10:26 a.m.YUL-STL
28h 41m2 stops
WestJet Logo
1:55 p.m. - 12:43 a.m.STL-YUL
9h 48m2 stops
C$ 809WestJet
Find Deal
Wed, 5 Nov - Wed, 12 Nov
WestJet Logo
6:45 a.m. - 4:10 p.m.YUL-STL
10h 25m2 stops
WestJet Logo
1:55 p.m. - 12:43 a.m.STL-YUL
9h 48m2 stops
C$ 810WestJet
Find Deal
Wed, 5 Nov - Wed, 12 Nov

Air Canada flights from Region of Ontario to Missouri

Our best Air Canada deals on Region of Ontario to Missouri flight tickets
Air Canada
25 Oct
YYZ2:15 p.m.Toronto Pearson Intl
2h 03m
STL3:18 p.m.Lambert-St Louis
2 Nov
STL4:05 p.m.Lambert-St Louis
2h 01m
YYZ7:06 p.m.Toronto Pearson Intl
C$ 527
Find similar
Air Canada
15 Oct
YYZ2:15 p.m.Toronto Pearson Intl
2h 03m
STL3:18 p.m.Lambert-St Louis
22 Oct
STL4:05 p.m.Lambert-St Louis
1h 55m
YYZ7:00 p.m.Toronto Pearson Intl
C$ 552
Find similar
Air Canada
4 Oct
YYZ3:00 p.m.Toronto Pearson Intl
5h 57m
1 stop
STL7:57 p.m.Lambert-St Louis
12 Oct
STL4:05 p.m.Lambert-St Louis
1h 55m
YYZ7:00 p.m.Toronto Pearson Intl
C$ 554
Find similar

American Airlines flights from Region of Ontario to Missouri

Our best American Airlines deals on Region of Ontario to Missouri flight tickets
American Airlines
5 Nov
YYZ10:57 a.m.Toronto Pearson Intl
13h 08m
1 stop
MCI11:05 p.m.Kansas City
10 Nov
MCI5:53 a.m.Kansas City
9h 42m
1 stop
YYZ4:35 p.m.Toronto Pearson Intl
C$ 477
Find similar
American Airlines
6 Nov
YUL3:52 p.m.Montreal Pierre Elliott Trudeau Intl
9h 04m
1 stop
STL11:56 p.m.Lambert-St Louis
8 Nov
STL7:58 p.m.Lambert-St Louis
18h 13m
1 stop
YUL3:11 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 499
Find similar
American Airlines
15 Oct
YYZ1:15 p.m.Toronto Pearson Intl
11h 39m
1 stop
STL11:54 p.m.Lambert-St Louis
21 Oct
STL6:00 a.m.Lambert-St Louis
7h 30m
1 stop
YYZ2:30 p.m.Toronto Pearson Intl
C$ 519
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Region of Ontario to Missouri that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 17 September 2025.
Use the filters below to find and compare flights from Ontario to Missouri that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 18/10

1:35 p.m.-10:02 a.m.

1 stop21h 27m

Lambert-St Louis

Thu 23/10

10:57 a.m.-2:05 p.m.

1 stop26h 08m

C$ 366

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 30/10

9:45 a.m.-1:57 p.m.

1 stop29h 12m

Lambert-St Louis

Thu 6/11

6:22 p.m.-2:40 p.m.

2 stops43h 18m

C$ 395

TorontoKansas City

YYZ - MCI

YYZMCI

Toronto Pearson Intl

Wed 5/11

10:57 a.m.-11:05 p.m.

1 stop13h 08m

Kansas City

Mon 10/11

5:53 a.m.-4:35 p.m.

1 stop9h 42m

C$ 477

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 6/11

3:52 p.m.-11:56 p.m.

1 stop9h 04m

Lambert-St Louis

Sat 8/11

7:58 p.m.-3:11 p.m.

1 stop18h 13m

C$ 499

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 25/10

2:15 p.m.-3:18 p.m.

Nonstop2h 03m

Lambert-St Louis

Sun 2/11

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 527

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 15/10

2:15 p.m.-3:18 p.m.

Nonstop2h 03m

Lambert-St Louis

Wed 22/10

4:05 p.m.-7:00 p.m.

Nonstop1h 55m

C$ 552

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 25/10

7:30 a.m.-2:27 p.m.

2 stops7h 57m

Lambert-St Louis

Sat 25/10

5:28 p.m.-11:58 p.m.

1 stop5h 30m

C$ 587

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 6/11

6:00 a.m.-3:46 p.m.

1 stop10h 46m

Lambert-St Louis

Sat 8/11

6:43 p.m.-12:46 p.m.

2 stops17h 03m

C$ 619

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 5/11

6:45 a.m.-10:26 a.m.

2 stops28h 41m

Lambert-St Louis

Wed 12/11

1:55 p.m.-12:43 a.m.

2 stops9h 48m

C$ 809

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 5/11

6:45 a.m.-4:10 p.m.

2 stops10h 25m

Lambert-St Louis

Wed 12/11

1:55 p.m.-12:43 a.m.

2 stops9h 48m

C$ 810

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Missouri from

How to get the cheapest flight ticket from Region of Ontario to Missouri

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Missouri?

The month of November is, on average, the cheapest month to fly to Missouri from Region of Ontario, with most prices found around C$ 652. If you are unable to visit Missouri during the month of November, then departing from Region of Ontario during the month June is also very affordable. Most momondo users find prices during this month for around C$ 680.

What is the cheapest time of day to depart on your flight to Missouri?

Our data shows that the cheapest Region of Ontario to Missouri flights are usually those with departure times in the morning. Our users have found flights to Missouri in the morning for as low as C$ 673. In the evening is when there is more demand to fly to Missouri, so prices are often more expensive at around C$ 873 per ticket.

What is the cheapest Ontario to Missouri flight route?

Fly from Toronto Pearson Intl to Lambert-St Louis for the best Ontario - Missouri flight prices

How far in advance should I book a flight to Missouri?

You are more likely to see cheaper flights to Missouri from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Missouri for around C$ 765 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Missouri from Region of Ontario for as low as C$ 616 on momondo.

What cabin class options are available on Ontario to Missouri flights?

There is only 1 cabin class available to choose from on Ontario to Missouri flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Region of Ontario to Missouri flights?

No. A direct flight is the cheapest option for a flight between Region of Ontario to Missouri.

Cheap Region of Ontario to Missouri flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Missouri

Best price found

C$ 871

Fastest flight time

2h 03m

Direct flights

Every day

Airports in Missouri

1 airport
The best one-way flight to Missouri from Region of Ontario in the past 72 hours is C$ 871. The best round-trip flight deal from Region of Ontario to Missouri found on momondo in the last 72 hours is C$ 538.
The fastest flight from Region of Ontario to Missouri takes 2h 03m
Direct flights go from Region of Ontario to Missouri every day.
There is 1 airport near Missouri: Lambert-St Louis (STL)
Search flight deals

  • When did momondo last update prices for flights from Ontario to Missouri?

    Prices for flights from Ontario to Missouri are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario to Missouri?

  • How old do you have to be to fly from Ontario to Missouri?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario to Missouri.

  • What documentation or ID do you need to fly to Missouri?

    The necessary travel and health documents for your Missouri trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Region of Ontario to Missouri?

Best airlines flying from Region of Ontario to Missouri

Compare and see reviews for airlines that fly from Region of Ontario to Missouri with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom C$ 320Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 426Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
American AirlinesPriceFrom C$ 428Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom C$ 473Free CancellationRating
7.9
7,961 reviews
Search Delta flights
WestJetPriceFrom C$ 555Free CancellationRating
7.2
3,095 reviews
Search WestJet flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Missouri?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Missouri from Ontario.

Can I find flights from Ontario to Missouri with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ontario to Missouri flights to just show those with flexible booking policies.

How can momondo help me find flights from Ontario to Missouri?

Once all potential Ontario to Missouri flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Missouri right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ontario to Missouri flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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